Plowshare.



No. 860,308. PATENTED' JULYlG, 1907.

A. LINDGREN. PLOWSHARE.

V APPLIOATION FILED MAR,23, 1907.

* Un -TED STATES TENT. OFFICE. j

; AUGUSTLL'INDGREN, ornoLmE, ILLINOIS, assrenoe'ro MOLINE PLOW COMPANY, A

' CORPORATION OF ILLINOIS.

rnowsmn.

To all whom it may concern: v

Be it known that 1, Answer Lmnearm, of Moline, county-of Rock Island and State of Illinois, have invented a new and v.urieful, Improvement in Plowshares, of which the following is a specification.

Plowshares, such as are .now extensively used, are

composed of a comparatively thin plate of high grade steel of a hard, brittle texture. This latter property, while necessary in order to insure proper, wearing and scouring of the share, renders .the latter extremely liable to breakage in use, this; breakage usually occurring near and in rear of the point of intersection of the. upper edge of the landside with the share. Furthermore, because of: the hard brittle comparatively simple difiiculties'bystrengtllening' the share at the point of nature-of the steel coinposing the share, more or less difficulty is encountered in the operation of welding the landsideto the share.

My invention has f r its objects to overcome, in a inexpensive manner, the above is,-at the point where breakgreatest weakness, tha 1 age generally occurs, and at the same time, provide a relativelysoft'surface to which the landside may be readily welded.

To these ends the invention resides in welding to the under or'reversepide'of' the hard metal share, a

embodied therein. Fig. 2 is a perspective view .of the same looking at'the under or reverse side. Fig! 3 is a plan 'view showing the share, reinforcing patch and landside section disconnected. Fig. 4 is a traw erse section on the line a-a, Fig. 1. Fig. 5 is a bottom, plan view of the share, showing the reinforcing patch in slightly different form. p I

Referringto the drawingsz-l designates the plow share composed as usual of a thin plate of high :grade steel, and of ordinary form,. having an upper edge. 2,

to'which the moldboard is attached, and an inclined forward cutting edge 3, terminating at 'its front end in a point 4, from which there extends rearwardl y, on a line parallel with 'the line of draft, a landside'e welded I .to the lower face of the share.

I? accordance with the invention; there is welded to he undener, reverseface of the hardsteel share,

: preferably prior to applying the landside 5, an ex'innded Specification of Letters Patent. Application filed inc 28, 1907. Boris-1R0. 864,096.

.PatentedJuly 16, 1907;

reinforcing section or patch 6, composed of relatively soft steel, and of requisite area to extend over the surface of the share both forwardly and rearwardly of the pointof intersection 3 of the upper edge of the landside with the share, that is, to-be more specific, from a point near the longitudinal center of the upper edge 2, to a point adjacent the forward end of the landside,

which latter is, after the application of the patch,

welded over the same to the share.

In action, the patch serves to effectually strengthen the share by totally obviating or at least reducing to a minimum, liability of the share being broken ,in use,

while at the same time, the specific location of the patch is such as togive the'requisite strength and rein forcement at the point where'breakage is, as has been demonstrated in practice, mostdiable to occur. 'Fur-' thermore, the patch afford sa relatively soft and thick surface to which the landsidemay be, welded more readily than to t*"e,ha rd thin surface of the share, whereby the time, labor and; expense incident to the operation in question is materially reduced, it being apparent that under the construction disclosed, and by the provision of the soft steelpatch. applied as explained, I not only 'efiectually strengthen the share against breakage, but provide for convenient attach ment of the landside and moldboard.

- For the attachment of the moldboard to the share, it

is usual in practice to form in the share near its upper edge, a number oibolt holes A B '& C to receive fastening' bolts by' whidh the mo ld' board is secured ,atits lower 'edge thereto, customarily the forward bolt hole 0 is located adjacent to but backof the point of internumeral'3 in Ina share of this specific coh-" struction, the break or fracture occurs over this forward bolt hole, and to prevent such breakage the .soft metal patch, applied in accordancewith my invention, is extended over the-point where this bolt hole is formed,

preferably both fore and aft of and below: the same, so as to reinforce and strengthen the share in the vicinity of the hole..

section of the iipperledge of tli'e'landside' with the I share, which point ofiinter se'ction is indicated by the While I'prefer to extend the soitiruetal' patch 'far enough forward to underlie the landside, so that the latter maybe welded on top -of the patch at this point,

this' forward extension of the patch isnotabsolutely necessary, because the share could be thickened at this point by other means thanthe patch, and the latter would need only to extend over the region of the share where breakage usually occurs, that is back of the intersection of then'pper edge of the landside therewith, or in the specific form 'of'share here shown, just over the forward bolt hole, 0. This modified form of my invention is illustratedin Fig. 5 where it will be seen thatthe' patch 6' does not extend forward far enoughto have'the:

Q eeo,soe

iandsi'de Welded to it, but terminates at or about the point where the upper edge of the iandside intersects the share.

Having thus described my invention, what I claim verse face, said patch being of an area to extend over the surface of the share rearwardly of the point of inter-sew tion of the upper edge of the landslide therewith.

2. A plowshare composed of hard'metal, and having a soft metal reinforcing patch welded to its lower or reverse face, said patch belng'oi an area to extend over the surface of the share both forwardly and rearwardly of the point of intersection of the upper edge of the landside therewith. I i I A plowshare composed of hard :netal, having a relatlvely soft metal-reinforcing patch welded to its'lower or reverse race, and a landside welded to the share over the soft .metal patch, the latter being of an area to extend forwardly and rearwerdly of the point of intersection of the upper edge of melandslde with the share.

4. A plowshare comprising a body of high grade thin steel, anda reinforcing patch of relatively soft. steel welded to the lower or reverse face of the share, and e tendingdrorn its upper edge transversely furrowwerd, and bothYm-wardly and hacitw'ardly of the point of intersection of the upper edge of the landside wlth the upper edge of the share; whereby the share is strengthened and thickened, thereby avoiding breakage and facilitating the attachment of the landside and nioldhoard.

. 5. The in pror'ed plowshere composedofhard steel having a soft metal reinforcing patch welded to its lower or reverse'face, said patch being oi an area to extend hock wardfrom the landside edge of the share adjacent the 10p edge, to a point back of thefirst .bolt hole, and a lendside welded to the share over the soft metal patch, I ruby avoiding breakage and facilitating the attachment of the landslcle.

In testimony whereof I hereunto set my hand thi 2nd day of March, 1907, in the presence of two attesting vllnesses.

AUGUST 7 LiNDGRlQN.

Witnesses:

L. C BLANDING, C. A. BAnins'rmz. 

